Pick Your COX Partners (IMAGE) University of Pennsylvania School of Medicine Caption Normal postnatal ductus arteriosus closure in wild-type (WT) mice and mouse mutants mimicking COX-2 inhibition. Arrows indicate patent ductus arteriosus. Credit Nature Medicine, AOP DOI: 10.1038/nm1412 Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.